NSO Staff: Harrison Jones

Jones (NASA/GSFC) will expand current studies of the formation of the He I triplet series resonance line at 1083 nm with V. Andretta using spectromagnetograph and rocket EUV observations to include new observations both at NSO/SP and NSO/KP in collaboration with Matt Penn and new spacecraft data from SOHO. Jones will continue participation in NSOs SOLVE initiative through analysis of multi- dimensional spectromagnetograph data to understand the origins of variations in bolometric solar irradiance. Jones has developed new objective multiscale techniques for finding and quantifying polarity inversion lines in solar magnetograms and will apply this to the study of the solar-cycle variation of magnetic field morphology. Jones has also developed a new technique, multiscale regularization, for quantifying optical flow, i.e. the movement of magnetic features in sequences of magnetograms, and will apply this technique to the study of active-region evolution using NSO/KPVT, GONG, and SOHO/MDI magnetograms. Jones will also continue to participate in the joint NASA/NSO instrumentation program for the NSO/KP Vacuum Telescope, which includes initial observations with a new 1083 nm video filtergraph and magnetograph and installation of a CCD-based guider and image-motion compensator.

Service

Jones is project leader for continued development of spectromagnetograph software and co-leader with J. Harvey on development of the 1083 nm Video Filtergraph/Magnetograph as well as a fast image motion compensator for the KPVT. Jones serves as the Tucson Partner representative on the NSO management committee as well as on the Project Review Committee.